Chest tightness and shortness of breath are relatively common complaints from patients. It may be due to coronary heart disease and insufficient myocardial blood supply that cause the symptoms of chest tightness. Some patients with coronary heart disease often have heart failure and cardiac insufficiency, which will lead to the symptom of shortness of breath.
There are also some people, especially women during menopause, who often complain of chest tightness and shortness of breath due to endocrine disorders. However, they often feel that taking a deep breath can relieve the symptom of shortness of breath. This is induced by emotional factors.
In addition, patients with autonomic nervous system dysfunction and cardiac neurosis may also experience chest tightness and shortness of breath.

So, chest tightness and shortness of breath do not necessarily mean coronary heart disease. It could also be cardiac neurosis or truly coronary heart disease.
Another possibility is that patients with pulmonary infections may also have chest tightness and shortness of breath.
